fix: link to custom resource definitions section

docs/chart_best_practices/README.md

@@ -17,5 +17,5 @@ may find that their internal interests override our suggestions here.
 - Kubernetes Resources:
 	- [Pods and Pod Specs](pods.md): See the best practices for working with pod specifications.
 	- [Role-Based Access Control](rbac.md): Guidance on creating and using service accounts, roles, and role bindings.
-	- [Third Party Resources](third_party_resources.md): Third Party Resources (TPRs) have their own associated best practices.
+	- [Custom Resource Definitions](custom_resource_definitions.md): Custom Resource Definitions (CRDs) have their own associated best practices.